Finding the Fourth Proportional to 1,380,429,763.86, 2,070,935,495.15 and 447,679,881.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,429,763.86 : 2,070,935,495.15 = 447,679,881.29 : x
2. Step 2: Convert to fraction form
   1,380,429,763.86/2,070,935,495.15 = 447,679,881.29/x
3. Step 3: Cross multiply
   1,380,429,763.86x = 2,070,935,495.15 × 447,679,881.29
4. Step 4: Simplify right side
   1,380,429,763.86x = 927,116,156,622,822,144
5. Step 5: Solve for x
   x = 927,116,156,622,822,144/1,380,429,763.86
6. Step 6: Final answer
   x = 671,614,145.75